think/packages/client/src/helpers/throttle.ts

export function throttle(func, wait, options?: { leading: boolean; trailing: boolean }) {
  let context, args, result;
  let timeout = null;
  let previous = 0;

  if (!options) options = { leading: false, trailing: true };

  const later = function () {
    previous = options.leading === false ? 0 : Date.now();
    timeout = null;
    result = func.apply(context, args);
    if (!timeout) context = args = null;
  };

  return function () {
    const now = Date.now();
    if (!previous && options.leading === false) previous = now;
    const remaining = wait - (now - previous);
    context = this;
    // eslint-disable-next-line prefer-rest-params
    args = arguments;
    if (remaining <= 0 || remaining > wait) {
      if (timeout) {
        clearTimeout(timeout);
        timeout = null;
      }
      previous = now;
      result = func.apply(context, args);
      if (!timeout) context = args = null;
    } else if (!timeout && options.trailing !== false) {
      timeout = setTimeout(later, remaining);
    }
    return result;
  };
}